Diaz Sport Tactical Molle Hydration Pack Backpack with 3L Water Bladder. Lightweight & Durable Military Daypack Keeps Water Cold for Up to 4 Hours | for Hiking Running Cycling Camping Biking Walking STAY HYDRATED! Replaceable 3L water bladder bag included. No need to buy a reservoir or bladder, our backpacks come with a ready to go bladder to keep you well hydrated throughout your expedition. The bladder also has a wide screw cap so you can add ice cubes to keep your water extra cool. WILL FIT YOU PERFECTLY. Comes with adjustable chest and waist straps so you can easily fit the backpack to match your physical requirements. These straps help keep the pack from moving and help keep in place. Ideal for outdoor sports such as hiking, camping, climbing, biking, cycling, walking, or running. PLENTY OF STORAGE SPACE. This hydration backpack comes with additional pockets to give you plenty of space to keep essential items such as keys, wallets, phone, towels, tools, snacks etc. The molle system on the front of the backpack creates more flexibility to attach additional essentials to your backpack LIGHTWEIGHT, TOUGH, & COMFORTABLE. This bag measures 18in x 9in x 2in and weighs only 25 ounces. Made from 600D polyester, this bag will withstand the elements. Breathable mesh on the backside designed to keep you cool and dry while on your outing. Comfortable shoulder padding alleviates any shoulder issues that may arise from long hiking, biking, walking, running, etc. 100% SATISFACTION GUARANTEE. Our product is backed by a Lifetime Money Back Guarantee. If you have any problems, please contact us for a replacement or full refund. This hydration pack is great for any outdoor related activities such as hiking, running, biking, cycling, snowboarding, etc. This pack will withstand the elements and sure to keep you hydrated at all times.